arXiv:hep-lat/0610107v2 5 Apr 2007 The N to ∆ axial transition form factors in quenched and unquenched QCD Constantia Alexandrou Department of Physics, University of Cyprus, CY-1678 Nicosia, Cyprus E-mail:alexand@ucy.ac.cy Theodoros Leontiou ∗ Department of Physics, University of Cyprus, CY-1678 Nicosia, Cyprus E-mail:t.leontiou@ucy.ac.cy John W. Negele Center for Theoretical Physics, Laboratory for Nuclear Science and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, U.S.A. E-mail: negele@mitlns.mit.edu Antonios Tsapalis University of Athens, Institute of Accelerating Systems and Applications, Athens, Greece E-mail: a.tsapalis@iasa.gr The four N to ∆ axial transition form factors are evaluated using quenched QCD, using two flavors of dynamical Wilson fermions and using domain wall valence fermions on three-flavor MILC configurations for pion masses down to 360 MeV. We provide a prediction for the parity violating asymmetry as a function of Q 2 and examine the validity of the non-diagonal Goldberger-Treiman relation. XXIV International Symposium on Lattice Field Theory July 23-28 2006 Tucson Arizona, US ∗ Speaker. c  Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence. http://pos.sissa.it/